ABB RELION RET670, Applications Manual

Page: 594 / 1016

Mode : The voltage and current used for the power measurement. The setting
possibilities are shown in table 45 .
Table 45: Complex power calculation
Set value
Mode
Formula used for complex power calculation
A,B,C
* * *
A B C A B C
S V I V I V I
= × + × + ×
EQUATION2038 V1 EN-US
(Equation 466)
Arone
* *
A C AB BC
S V I V I
= × ×
-
EQUATION2039 V1 EN-US
(Equation 467)
PosSeq
*
PosSeq PosSeq
S 3 V I
= × ×
EQUATION2040 V1 EN-US
(Equation 468)
A,B
*
A B AB
*
S V (I I
) = ×
-
EQUATION2041 V1 EN-US
(Equation 469)
B,C
*
B C
BC
*
S V (I I
)
= ×
-
EQUATION2042 V1 EN-US
(Equation 470)
C,A
*
C A
CA
*
S V (I I
)
= ×
-
EQUATION2043 V1 EN-US
(Equation 471)
A
*
A A
S 3 V I
= × ×
EQUATION2044 V1 EN-US
(Equation 472)
B
*
B B
S 3 V I
= × ×
EQUATION2045 V1 EN-US
(Equation 473)
C
*
C C
S 3 V I
= × ×
EQUATION2046 V1 EN-US
(Equation 474)
The function has two stages that can be set independently.
With the parameter OpMode1(2) the function can be set Enabled / Disabled .
The function gives trip if the power component in the direction defined by the setting
Angle1(2) is larger than the set pick up power value Power1(2)
Section 9
1MRK 504 163-UUS A
Current protection
588 Transformer protection RET670 2.2 ANSI
Application manual